An unmanned autonomous vehicle for displacing feed lying on a floor is provided with two wheels that are separately drivable, a distance determining device for determining the distance from the vehicle to a wall portion, an orientation determining device for determining the orientation of the center line of the vehicle relative to the wall portion, a torque difference determining device for determining the torque difference between the wheels, a control unit for controlling the vehicle and moving it in a direction of travel, and a feed displacing arrangement for displacing feed substantially sidewardly. The control unit may be programmed in such a way that during operation the vehicle will maintain a distance determined by the distance determining device to the wall portion, which distance is greater than or equal to a pre-adjusted minimum distance to the wall portion. During operation the center line of the vehicle may be maintained with an orientation determined by the orientation determining device relative to the wall portion, which orientation is at least almost equal to a pre-adjusted orientation. During operation the drivable wheels of the vehicle may show a torque difference determined by the torque difference determining device, which difference can then be maintained at a value smaller than or equal to a pre-adjusted maximum torque.